Not necessarily. There are many fictional characters with incredibly powerful abilities and it's hard to say for sure if Doom Slayer is the absolute strongest.
Well, 'Doom Slayer: Redemption' is a great fanfic. It shows the Slayer's struggle with his own inner demons while still fighting the literal demons. Then there's 'The Doom Slayer's Allies'. This fanfic explores the relationships the Slayer could have with other characters, whether they be human survivors or other powerful entities. And don't forget about 'Doom Slayer: In the Wasteland'. It's set in a post - apocalyptic world where the Slayer has to face not only demons but also the harsh environment.
There are definitely some 'Goblin Slayer x Doom' fanfics. One interesting aspect that some of these fanfics explore is the different combat styles of the two main characters. The Goblin Slayer is more methodical in his approach to dealing with goblins, while the Doomguy is all about brute force against demons. In a crossover fanfic, seeing how they would either learn from each other or clash because of their different styles can be really engaging. Also, the settings of the two can be blended in unique ways, like the dark and gritty world of 'Doom' with the medieval - ish setting of 'Goblin Slayer'.
Well, the plot could involve a rift opening between the two worlds. Goblins start pouring into the Doom world and the Doomguy has to deal with them. Meanwhile, the Goblin Slayer follows the goblins through the rift and they end up working together to close the rift and stop the chaos. They might exchange combat techniques and learn from each other's experiences along the way.
First, know the lore of Doom well. Understand the Doom Slayer's character, his abilities, and his purpose. Then, come up with an interesting plot. It could be something like the Slayer facing a new type of demon or exploring a new dimension. Next, create some engaging characters to interact with the Slayer. They could be allies or foes. And don't forget to write in a way that captures the action - packed and dark atmosphere of the Doom universe.
In Doom 2, the story picks up with the Doomguy being in the middle of a full - scale demonic invasion on Earth. The demons are everywhere, causing chaos and destruction. The game's levels are designed to tell the story of his journey as he moves from one area filled with demons to another. He uses an arsenal of weapons to fight off monsters like the Pinky, the Cyberdemon and others. It's a fight for survival and to reclaim the Earth from the clutches of Hell.
In the Doom game's story, the UAC's over - ambitious research on Mars goes terribly wrong. Their exploration of teleportation technology leads to the connection with Hell. As a result, the base is overrun by demons. The player, as a space marine, has to fight back. The levels are filled with intense combat situations. You encounter different demon species, each with their own abilities and weaknesses. The story unfolds as you progress through the levels, facing more and more powerful demonic threats, all while trying to find a way to close the portal to Hell and save humanity.